66250756-EN - V2.1 - 05/11/19
- 19 -
4000 Series GSM Lite Audio Intercom - Technical Manual
4000 Series GSM Lite Audio Intercom
Auxiliary Inputs/Outputs
AO1 SET TO MODE 02, ‘STATUS INDICATION’
When set to mode 02 auxiliary output AO1 is used exclusively as a monitoring input. For example, checking if a gate/door is open
or closed. Once set the AO1 input status can be interrorgated in two ways:
1. During a call: press 9 on the telephone keypad and listen to the number of beeps in the ear piece. One beep indicates the input
is CLOSED and two beeps indicates the input is OPEN.
2. At anytime: send the SMS message 1111CHK? to the GSM LITE intercom. An SMS message will be returned with IN=OP for
OPEN or with IN=CL for CLOSED.
For this feature an additional relay will be required and the AO1 input must be wired as shown in Fig.18.
GSM
INTERCOM
Art.4811
OR
1 2
To Antenna
Fig. 18
AO1 SET TO MODE 03, ‘DIVERT CALLS TO MASTER NUMBER’
It is possible to have the GSM LITE call buttons diverted to the master number when auxiliary output AO1 has been set to mode 03
(auxiliary output AO1 is used as a monitoring input). In this instance a switched common and normally open (CO/NO) trigger needs
to be used to enable or disable ‘divert calls to master number’ and the auxiliary output AO1 must be wired as shown in Fig.19. In
either case a master number is required following the STM store master number feature (see STM programming notes on page 36).
If there is no master number stored the GSM LITE intercom will indicate this with a series of beeps and no call will take place.
GSM
INTERCOM
Art.4811
Normally open (NO) switched input to
enable and disable divert to master number
To Antenna
Fig. 19
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